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Energy Flow & Nutrient Cycles

Total questions: 45

Worksheet time: 45mins

Name
Class
Date
1.

What is the original BIOTIC source of almost all energy in most ecosystems?

a)
carbohydrates
b)

Producers

c)
water
d)
carbon
2.

What is the original ABIOTIC source of almost all energy in most ecosystems?

a)
carbohydrates
b)

Sunlight

c)
water
d)
carbon
3.

An organism that produces its own food supply from inorganic compounds is called a(n):

a)

heterotroph

b)

consumer

c)

detritivore

d)

autotroph

4.

A primary consumer is also known as:

a)

carnivore

b)

herbivore

c)

trophic level

d)

foodie

5.

Only ____ of organism energy is passed on to the next trophic level of an ecosystem as you move up the energy pyramid.

a)

10%

b)

1%

c)

100%

d)

20%

e)

90%

6.

What are the products/outputs of photosynthesis?

a)

water and carbon dioxide

b)

oxygen and glucose

c)

oxygen and carbon dioxide

d)

oxygen and water

7.
Which gas is removed from the atmosphere during photosynthesis?
a)
hydrogen
b)
oxygen
c)
nitrogen
d)
carbon dioxide
8.

Which of the following is the correct equation for PHOTOSYNTHESIS?

a)

CO2 + light + H2O --> O2 + Sugar

b)

CO2 + sugar + H2O --> O2 + light

c)

O2 + light + H2O --> CO2 + Sugar

d)

CO2 + O2 + H2O --> Light+ Sugar

9.

What type of consumer is the shrew?

a)

herbivore

b)

omnivore

c)

carnivore

d)

detritivore

10.

According to this food web, which heterotrophs are secondary consumers?

a)

lion & caracal

b)

lion & mouse

c)

rhino & giraffe

d)

impala & snake

11.

The arrows in a food chain or web represents what?

a)

They point to the organism that is being eaten (from the predator to the prey item)

b)

It shows how sunlight flows within each level of the ecosystem

c)

They show what direction the energy is flowing between organisms. (from prey to predator)

d)

They represent how water molecules are transferred within a habitat.

12.
What is an organism that breaks down & absorbs dead matter so nutrition can be recycled into the soil?
a)
Consumer
b)
Decomposer
c)
Producers
d)
Scavenger
13.

When an organism's energy source comes from both animals and plants, that organism is considered to be a:

a)
predator
b)
omnivore
c)
herbivore
d)
carnivore
14.

Which organism receives the least amount of energy from the producer?

a)
Owl
b)
Grasshopper
c)
Lilypad
d)
Mouse
15.

If 15200 kJ of energy is available at the primary producer level, how much energy is available at thew secondary consumer level?

a)

1520

b)

152

c)

15.2

d)

1.52

16.

The diagram represents a pyramid of energy in an ecosystem.  Which level would most likely contain herbivores?

a)
A
b)
B
c)
C
d)
D
17.

Both ______ and ______ DECREASE as you move up the energy pyramid in an ecosystem.

a)

Sunlight; Nitrates

b)

Energy; Biomass

c)

Biomass; Predation

d)

Heat; Photosynthesis

18.

Which of these shows a possible food chain for an ecosystem?

a)

shark--> fish --> plankton -->sun

b)

sun --> plankton --> fish --> shark

c)

plankton --> sun --> fish --> shark

d)

plankton --> fish --> shark --> sun

19.
Name the tertiary consumer?
a)
snake
b)
fungi
c)
hawk
d)
mouse
20.

Name the detritivore?

a)
snake
b)
fungi
c)
hawk
d)
mouse
21.

Organisms that must consume other organisms to acquire energy are called:

a)

Heterotrophs

b)

Autotrophs

c)

Decomposers

d)

Detritivores

22.
What is the most abundant gas in the atmosphere?
a)

hydrogen (H2)

b)

oxygen (O2)

c)
helium
d)

nitrogen (N2)

23.
Identify the cycle pictured.
a)
The Water cycle
b)
The Carbon cycle
c)
The Nitrogen cycle
d)
The Phosphorus cycle
24.

A Cactus has 4520 kcal of energy it acquired from photosynthesis. Based on the food chain in the photo, how much energy will the hawk gain?

a)

4520 kcal

b)

452 kcal

c)

45.2 kcal

d)

4.52 kcal

e)

0.452 kcal

25.

What process is happening step A?

a)

transpiration

b)

evaporation

c)

condensation

d)

accumulation

26.

Which factors are ABIOTIC?

a)

sunlight

b)

plants

c)

precipitation

d)

wind

27.

Which factors are BIOTIC?

a)

humans

b)

Insects

c)

rocks

d)

sulight

28.

The Products of Cellular Respiration:

a)

Carbon Dioxide

b)

Oxygen gas

c)

Water

d)

Glucose/sugar

29.

Reactants of Cellular Respiration:

a)

water

b)

carbon dioxide

c)

oxygen gas

d)

Glucose/sugar

30.

Which processes are ANAEROBIC?

a)

Fermentation

b)

Photosynthesis

c)

Cellular Respiration

31.
What is the function of ATP in living things?
a)
provides energy for cells
b)
stores genetic information
c)
provides structure in the nucleus
32.
Which cellular organelle is responsible for manufacturing ATP?
a)
Ribosome
b)
Nucleus
c)
Mitochondria
d)
Chloroplast
33.

Which of these organisms produce ATP through cellular respiration?

a)

Plants

b)

Animals

c)

Both

d)

Neither

34.

What is the meaning of PHOTO?

a)

light

b)

to put together

c)

red

d)

green

35.

What is the meaning of SYNTHESIS?

a)

light

b)

to put together

c)

red

d)

green

36.

What is the meaning of trophic?

a)

food/nutrition

b)

carbs/sugar

c)

different

d)

self

37.

What is the meaning of HETERO?

a)

food/nutrition

b)

carbs/sugar

c)

different

d)

self

38.

What is the meaning of AUTO?

a)

food/nutrition

b)

carbs/sugar

c)

different

d)

self

39.
Matter can recycle through the biosphere because
a)
matter does not change into new compounds.
b)
matter is assembled into chemical compounds.
c)
biological systems do not use up matter, they transform it.
d)
biological systems use only carbon, oxygen, hydrogen, and nitrogen.
40.
Nitrogen fixation is carried out primarily by
a)
humans.
b)
plants.
c)
bacteria.
d)
consumers.
41.
How does carbon dioxide leave the atmosphere?
a)
Through transpiration
b)
Through photosynthesis
c)
Through factory emission
d)
Sunlight
42.
Which process takes Carbon Dioxide from the air and converts it into a form of carbon used by living things?
a)
Precipitation
b)
Photosynthesis
c)
Respiration
d)
Bioremdiation
43.
Respiration is the process by which ____________ is consumed and _______________ is produced.
a)
Carbon, Oxygen
b)
Oxygen, Carbon dioxide
c)
H20, oxygen
d)
Carbon, H2O
44.
If these organisms were arranged in an ecological biomass pyramid, which organism would have the least amount of biomass?
a)
coyote
b)
insect
c)
lizard
d)
shrub
45.

In the food web above, what organism is a tertiary consumer?

a)

Fox

b)

Frog

c)

Vole

d)

Grass

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